Question

Prove with example that some metal oxide are amphoteric

Answer 1

Answer:

Explanation:

Al2O3 is an example of an amphoteric oxide. ... Acids donate protons (or accept electron pairs) and bases accept protons; amphoteric substances can do either. Metal oxides which react with both acids as well as bases to produce salts and water are known as amphoteric oxides.

Answer 2

Clark's method is a process for the large-scale removal of temporary hardness from water. ... Slaked lime is itself a source of calcium ions (and hence hardness) so care must be taken to avoid adding an excess. ... InClark's method a calculated amount of calcium hydroxide Ca (OH)2 is added